40=30+2m

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Solution for 40=30+2m equation: 



40=30+2m

We move all terms to the left:

40-(30+2m)=0

We add all the numbers together, and all the variables

-(2m+30)+40=0

We get rid of parentheses

-2m-30+40=0

We add all the numbers together, and all the variables

-2m+10=0

We move all terms containing m to the left, all other terms to the right

-2m=-10

m=-10/-2

m=+5

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